FaSTTUBe/GST-Tensordecoder-ov_ep
61
0
Fork 0
Code Issues Pull Requests 1 Actions Packages Projects Releases Wiki Activity

v4l2: only set framerate for capture for now

Browse Source
This commit is contained in:
Wim Taymans 2011-07-13 11:29:26 +02:00
parent 9f4cf3be58
commit 50ce1807f0
1 changed files with 31 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

60
sys/v4l2/gstv4l2object.c
View File

@ -2164,37 +2164,39 @@ gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps)
if (v4l2_ioctl (fd, VIDIOC_G_PARM, streamparm) < 0) if (v4l2_ioctl (fd, VIDIOC_G_PARM, streamparm) < 0)
goto get_parm_failed; goto get_parm_failed;
GST_DEBUG_OBJECT (v4l2object->element, "Got framerate: %u/%u", if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
streamparm->parm.capture.timeperframe.denominator, GST_DEBUG_OBJECT (v4l2object->element, "Got framerate: %u/%u",
streamparm->parm.capture.timeperframe.numerator); streamparm->parm.capture.timeperframe.denominator,
streamparm->parm.capture.timeperframe.numerator);
/* Note: V4L2 provides the frame interval, we have the frame rate */ /* Note: V4L2 provides the frame interval, we have the frame rate */
if (!fractions_are_equal (streamparm->parm.capture.timeperframe.numerator, if (!fractions_are_equal (streamparm->parm.capture.timeperframe.numerator,
streamparm->parm.capture.timeperframe.denominator, fps_d, fps_n)) { streamparm->parm.capture.timeperframe.denominator, fps_d, fps_n)) {
GST_LOG_OBJECT (v4l2object->element, "Setting framerate to %u/%u", fps_n, GST_LOG_OBJECT (v4l2object->element, "Setting framerate to %u/%u", fps_n,
fps_d); fps_d);
/* We want to change the frame rate, so check whether we can. Some cheap USB /* We want to change the frame rate, so check whether we can. Some cheap USB
* cameras don't have the capability */ * cameras don't have the capability */
if ((streamparm->parm.capture.capability & V4L2_CAP_TIMEPERFRAME) == 0) { if ((streamparm->parm.capture.capability & V4L2_CAP_TIMEPERFRAME) == 0) {
GST_DEBUG_OBJECT (v4l2object->element, GST_DEBUG_OBJECT (v4l2object->element,
"Not setting framerate (not supported)"); "Not setting framerate (not supported)");
goto done; goto done;
}
/* Note: V4L2 wants the frame interval, we have the frame rate */
streamparm->parm.capture.timeperframe.numerator = fps_d;
streamparm->parm.capture.timeperframe.denominator = fps_n;
/* some cheap USB cam's won't accept any change */
if (v4l2_ioctl (fd, VIDIOC_S_PARM, streamparm) < 0)
goto set_parm_failed;
/* get new values */
fps_d = streamparm->parm.capture.timeperframe.numerator;
fps_n = streamparm->parm.capture.timeperframe.denominator;
GST_INFO_OBJECT (v4l2object->element, "Set framerate to %u/%u", fps_n,
fps_d);
} }
/* Note: V4L2 wants the frame interval, we have the frame rate */
streamparm->parm.capture.timeperframe.numerator = fps_d;
streamparm->parm.capture.timeperframe.denominator = fps_n;
/* some cheap USB cam's won't accept any change */
if (v4l2_ioctl (fd, VIDIOC_S_PARM, streamparm) < 0)
goto set_parm_failed;
/* get new values */
fps_d = streamparm->parm.capture.timeperframe.numerator;
fps_n = streamparm->parm.capture.timeperframe.denominator;
GST_INFO_OBJECT (v4l2object->element, "Set framerate to %u/%u", fps_n,
fps_d);
} }
done: done: